$\backslash$table$[[,$Per Unit,$\backslash$table$[[$Percent$],[$of soles$]]],[9$ prich,$$138,1094],[$Variable expenses,$78,68],[$Contributia$,$$$52,4204]]$

Fived expenses are $$86,000$ per month and the campany is seling $2,800$ units per month.

$2-$a$.$ Refer to the ariginal data. How much will nat cperating income increase $($decrease$)$ per month if the company uses higher components that increase the variable expense by $56$ per unit and increase unit sales by $15\%.$

$2-$b$,5$ hould the higher$-$quality componens be used?

Answer is complete but not entirely correct.

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Rea $2$ A

Refer to the ofiginal data. How much will net operating income increase $($decrease$)$ per month if the company uses higherquality camponents that increase the variable expense by $$6$ per unit and increase unit sales by $15\%.$

$\backslash$table$[[$Net opsrating income,increases,$0,$by$,521\mathrm{.}3400]]$